I’m having a slight mental breakdown ANY help would be nice

Combine like terms7y^2 + 7(6y^2 − 8)

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x, y) ?